Permutation-lock



(Model. 3

- J. P. J0

PERMUTATIO GK.

2 Sheets-Sheet 1.

No. 416,629. Patented Dec. 8, 1889. W W h I 1 l WM}, Pl I I '1' WI I 'Fnh. 1 I 9 m i L' M; i!

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J. P. JONES. PERMUTATION. LOOK.

No. 416,629. Patented D60. 3,

WITNESSES @MJLLW m UNITED STATE-S.

PATENT OFFICE,"

JEFFERSON JONES, OF WALDRON, ASSIGNOR TO GEORGE WV. HILE AND FREEMAN C.MAS ON, BOTH OF RANSOM, MICHIGAN.

PERM UTATlON-LOCK.

SPECIFICATION forming part of Letters Patent No. 416,629, dated December3, 1889,

, Application filed May 28, 1888. Serial No. 275,336- (Model.) 7

To all whom it may concern.-

Be it known that I, JEFFERSON P. J ONES, a

citizen of the United States, residing at Wal dron, in the county ofHillsdaleand State of Michigan, have invented certain new and.

provision of a lock of this nature which can- -not be opened by feeling.and sound, and in.

which the combination can be changed as often as may be desired withoutthe necessity of having to remove the tumblers from their shaft. Thebolt-lockin g lever is weighted at its outer end and its inner endisnormally held off from the tumblersthat is, it does not rest or ride onthe tumblers-and if caused to bear upon the tumblers by-operating theknob-shaft the tumblers cannot be moved only a limited distance becauseof the stops provided on their periphery engaging with the said lever.The locking-lever is operated by a lifting-arm that is keyed to asleeve,

mounted on the knob-shaft, said sleeve having a thumb-piece or head onits outer end to be grasped betweenthe fingers for operating it. Thislifting-arm serves as a supplemental means for locking the locking-boltwhen the said bolt is projected.

The improvement consists of the novel features, which hereinafter willbe more fully described and claimed, and shown in the annexed drawings,in which-- tional View through the knob-shaft, showing the sleeve andthe lifting-arm; Fig. 8, adeshowing the lifting-finger in position,an d

Fig. 9 shows detail views of otherthree tumblers.

.The tumbler-shaft A and the knob a with its graduated base are of usualconstruction.

The tumblers B are constructed alike, and a detailed description of onewill sufficefor each. The tumbler is provided with a series of notches bin its periphery and a series of pins or stops 1). are filled withremovable blocks 0, which come flush with the periphery of the tumbler.Any one of the blocks 0 can be removed and inserted in the vacant notchto efiect a change in the combination. The pins or stops I) extend ashort distance from the periphery of the tumbler to engage with thelocking-leverD,if the same is caused to bear against the tumbler andprevent a free move- All of the notches save one ment of the saidtumbler except in the space between two of the said pins or stops,thereby preventing the feeling of the look by unauthorized persons toascertain the combination. The central opening of the tumbler is largerthan the tumbler-shaft and receives the tubular extension of the keeperE, on which the tumbler is mounted. The side of the tumbler isprovidedwith the recess b within which the arm ctflprojecting from the.

arranged in series, the distance between the sides of the stop will varyfor each tumbler. This variation is eifected in one of two wayseither bywidening the stop 12 or providing a second stop I), which is placed atdifferent distances from the stop b The first tumbler of the series hasthe greatest movement relative to the shaft A, and the last tumbler ofof the lever when the notches in the tumblers are in alignment. The earse proj ecting from the edges of the keepers are thickened or providedwith the lugs e on their rear sides, which space the keepers apart topermit the tumblers to work freely between each two of the keeperswithout any binding. The

lugs and the ears are perforated and the bolts 1), passing through theperforations, bind the keepers together and secure them to the door. Thetumbler-shaft has a bearing in eachof the keepers and the tumblers aremounted on the tumbler-extensions of the keepers. v

Th e mainlocking-boltF is centrally disposed and is provided with theupper and the lower arms f and f,which engage with the upper and. thelower locking-bolts G and G, respectively, the ends of the arms fittingin notches in the weighted and rests on the bolt F, and drops in thenotch f in the said bolt F to lock it when projected. This lever isdisengaged from the bolt F by the lifting-arm 7a, which is keyed to thesleeve K, mounted on the knob-shaft, the outer endof the sleeve havingthe head or thumb piece 7o,which is grasped between the thumb andfingers to rotate the sleeve and elevate the arm and lever D. The arm'kfits in a recess f in the bolt F when the bolt F is projected, and inconnection with the lever D holds the bolt projected.

The vertical bolts L and M overlap or extend across the bolt F, and haveprojections or studsl and m, respectively, which fit in notches in thedisk H.

bolts L and M respectively.

When the door to which the lock is applied is open and the several boltsare retracted, the lifting-arm It will have its end resting on thelocking-bolt and the lever Dwill have its outer end also resting on thesaid bolt and its inner end fitted in the notches in the keepers and thetumblers. When the bolts are projected, the end of the arm 7t will dropin the recess in the boltF and the locking-lever D will engage with andlock the said bolt F. The inner end of the locking-lever D stands at asufficient distance from the tumblers to The auxiliary bolts N and 0have notches which receive the ends of the rods Z and m, which projectfrom the clear the pins or stops l) thereof and permit tumblers ineither claim, and desire to secure by Letters Patent,

iss 1. In a combination-lock, the combination, with a tumbler having aseries of notches in its periphery, of a series of removable andinterchangeable blocks whereby the combination can be changed withoutremoving the tumbler from its support or shaft, substantially as setforth.

2. In a combination-lock, the combination, with the tumbler and alocking-lever, of a series of pins or stops projecting from theperiphery of the tumbler to engage with the said locking-lever,substantially as and for the purpose specified.

3. The combination, with the tumbler-shaft and the keepers having atubular extension and lateral ears, of the tumbler mounted on thetubular extension of the keepers, and the bolts for securing the keeperstogether, substantially as described.

4. The combination of the tubular shaft, the series of keepers'havingears, which ears are thickened at their ends and are perforated andhaving notches in their edges and tubular extensions, the bolts passingthrough the perforations in the said ears and binding the keeperstogether and securing them to the door, the tumblers mounted on thetubular extensions of the keepers and having recesses in their sides ofvarying lengths,

and the arms projecting from the tubular shaft and working in the saidrecesses of the tumblers, substantially as described.

5. The combination, with the tumblers, the locking-lever, thelocking-bolt, and the knobshaft, of the sleeve mounted on the knobshaft,and the lifting-arm keyed to the sleeve and adapted to disengage thelocking-lever

